【摘 要】
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Aimed at the difficulty in revealing the vibration localization mechanism of mistuned bladed disks by using simple non-linear model, a mechanical model of the b
【机 构】
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School of Mechanical and Electrical Engineering,State Key Laboratory of High Performance and Complex
论文部分内容阅读
Aimed at the difficulty in revealing the vibration localization mechanism of mistuned bladed disks by using simple non-linear model, a mechanical model of the bladed disk with random mistuning of hysteretic dry friction damping was established.Then, the incremental harmonic balance method was used to analyze the effects of the parameters of bladed disks, such as the mistuning strength of dry friction force, coupled strength, viscous damping ratio and friction strength, on the forced response of the bladed disks. The results show that the vibrational energy localization phenomenon turns up in the tuned bladed disks ifthe nonlinear friction damping exists, and the random misttning of the dry friction force intensifies this kind of vibration localization.
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